A number of studies have examined the design of satellite constellations to provide continuous global coverage.Using these methods, continuous coverage of the entire Earth is found to require a large number of circular LEO satellites. Since the majority of the world's population and industrial activity lies in the latitude band between 20 and 60 deg (N and S), it is of interest to find the number of satellites required to continuously cover this midlatitude band. In this analysis, optimal constellations have been developed specifically for continuous coverage of the 20-60 deg latitude band. The number of satellites required has been found to be about 2/3 to 3/4 of the number required for continuous global coverage. For the case of a LEO constellation at 400 n. mi altitude, about 30 inclined-orbit satellites are required to cover the midlatitudes as opposed to 40 polar orbit satellites required for full Earth coverage. For this LEO case the optimal buildup of the satellite constellation has been analyzed and the coverage obtained at various stages is presented.